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olya-2409 [2.1K]
2 years ago
9

What is an emission spectrum?

Chemistry
1 answer:
SashulF [63]2 years ago
8 0

Answer:

D

Explanation:

The electromagnetic radiation is emitted due to a particle moves from a higher to a lower energy state

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MissTica

<em><u>ANSWER</u></em>

shell or the energy level

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The type of chemical reaction represented by the following equation is...
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i believe the answer is a

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5 0
2 years ago
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⦁ Find the concentration of H+, OH-, PH and POH of 0.03 M of magnesium hydroxide which ionizes to the extent of only 1 /3 in aqu
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Answer:

pH=12.3\\\\pOH=1.7\\

[H^+]=5x10^{-13}M

[OH^-]=0.02M

Explanation:

Hello there!

In this case, according to the given ionization of magnesium hydroxide, it is possible for us to set up the following reaction:

Mg(OH)_2(s)\rightleftharpoons Mg^{2+}(aq)+2OH^-(aq)

Thus, since the ionization occurs at an extent of 1/3, we can set  up the following relationship:

\frac{1}{3} =\frac{x}{[Mg(OH)_2]}

Thus, x for this problem is:

x=\frac{[Mg(OH)_2]}{3}=\frac{0.03M}{3}\\\\x=  0.01M

Now, according to an ICE table, we have that:

[OH^-]=2x=2*0.01M=0.02M

Therefore, we can calculate the H^+, pH and pOH now:

[H^+]=\frac{1x10^{-14}}{0.02}=5x10^{-13}M

pH=-log(5x10^{-13})=12.3\\\\pOH=14-pH=14-12.3=1.7

Best regards!

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3 years ago
Which of the following elements is the smallest?
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Answer:

chlorine

Explanation:

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Why is the Chemical symbol for lead Pb?? ^__^ i HATE the perdiotic** table!!
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Cause latin name of Pb is plumbum.
The same K - potassium - latin name is kalium.
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3 years ago
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